陕西省凤太矿集区铅锌矿床特征及找矿预测地质模型  

Characteristics of lead-zinc deposits and geological model for prospecting prediction in Fengtai ore concentration area,Shaanxi Province

作　　者：李伟 张革利 王雷 王欣 张旭涛 董君鹏 马双宝 LI Wei;ZANG Geli;WANG Lei;WANG Xin;ZANG Xutao;DONG Junpeng;MA Shuangbao(Baoji 717 Corps Limited of the Northwest Nonferrous Geological and Mining Group,Baoji 721015,Shaanxi,China)

机构地区：[1]宝鸡西北有色七一七总队有限公司,陕西宝鸡721015

出　　处：《矿产勘查》2021年第9期1907-1915,共9页Mineral Exploration

基　　金：陕西省凤太矿集区找矿预测子项目(DD2016005213)资助。

摘　　要：凤太矿集区是秦岭成矿带重要组成部分,区内已发现并探明了数量众多的铅锌矿床(点)。现今找矿工作已经转入到隐伏矿找矿阶段,运用相关找矿预测理论与方法,进行勘查区矿产预测,对隐伏矿找矿工作有重要的意义。本文通过对区内铅锌矿床成矿规律、矿体的产出类型和典型矿床成矿特征总结研究,确定了区内成矿地质体为印支期侵入的中酸性隐伏岩体,成矿构造为NWW向褶皱断裂构造系统,主成矿结构面为中泥盆统古道岭组灰岩与上泥盆统星红铺组千枚岩接触部位的“硅钙面”。在归纳成矿作用特征标志的基础上,初步建立凤太矿集区铅锌矿找矿预测地质模型,为下一阶段矿集区找矿预测工作提供了思路。Fengtai ore concentration area is an important part of Qinling metallogenic belt.A large number of lead-zinc deposits(ore spots)have been discovered and proved in this area.Now the prospecting work has been transferred to the stage of hidden ore prospecting.It is of great significance to use the theory and method of prospecting prediction to predict the mineral resources in the exploration area.By summarizing and studying the metallogenic regularity of lead-zinc deposits,the types of ore bodies and the metallogenic characteristics of typical ore deposits in the area,it is determined that the ore-forming geologic body in the area is the Indosinian intrusive intermediate-acid concealed rock mass,the ore-forming structure is the NWW-trending fold fault structure system,and the main ore-forming structural plane is the“silica-calcium surface”where the limestone of the Middle Devonian Gudaoling Formation contacts with the Cambrian of the Upper Devonian Xinghongpu Formation.On the basis of summarizing the characteristics of mineralization,this paper preliminarily establishes the geological model for prospecting and prediction of lead-zinc deposit in fengtai ore concentration area,which provides ideas for the next stage of prospecting and prediction of ore concentration area.

关 键 词：凤太矿集区 矿产特征 典型矿床 找矿预测 

分 类 号：P612[天文地球—矿床学]